Automation will certainly take over fast food, as this industry has traditionally been mechanized. However, this ignores the simply massive amount of very profitable independent restaurants that rely upon quality, not price. Not to mention the chains that serve more expensive food. There just isn't a way to mechanize BBQ, or steaks, even pizza is simply awful when it isn't hand-made.
So. Where does that leave us.
Saz is right, but drastically overstating the degree to which this will alter the food industry. Literally all the big trends in food are opposed to the mechanized nature of fast food. Local. Organic. Hand-made. High quality. Not only that, but there is a large amount of backlash against automated services right now.
I could be wrong, but guess what? We still have twenty or more years to go before this supposed revolution. In the meantime, people gotta make a living, or there will be nobody to pay for all these fancy machines.